Peng, JB Yu, BY Pyun, CH Kim, CH Jin, JI 2024-01-21T17:45:24Z 2024-01-21T17:45:24Z 2021-09-04 1997-12 0022-2313 https://pubs.kist.re.kr/handle/201004/143495 Two metal electrodes of aluminum (Al) and calcium (Ca), which have different work functions, were used to fabricate EL devices based on poly(p-phenylene vinylene) (PPV) with single-layer structure. A new experimental phenomenon is discovered. The electroluminescent (EL) spectra are different in EL devices with metal electrode of Al and Ca. The feature is expressed as a variation of the ratio of intensity from the peak at 550 nm to the peak at 510 nm. From this, we discussed the main type of carrier moving in PPV film with Al and Ca electrodes, respectively, By comparing the processes between EL and photoluminescence (PL), a reason for the difference in EL spectra with Al and Ca electrodes was analyzed. English ELSEVIER SCIENCE BV LIGHT-EMITTING-DIODES POLY(P-PHENYLENE VINYLENE) CONJUGATED POLYMERS The effect of a metal electrode on PPV electroluminescence processes Article 10.1016/S0022-2313(97)00123-3 1 JOURNAL OF LUMINESCENCE, v.75, no.4, pp.361 - 365 JOURNAL OF LUMINESCENCE 75 4 361 365 scie scopus A1997YK85500012 2-s2.0-0031359968 Optics Optics Article LIGHT-EMITTING-DIODES POLY(P-PHENYLENE VINYLENE) CONJUGATED POLYMERS electroluminescence photoluminescence metal electrode effect poly(p-phenylene vinylene) (PPV)